“The first week of launch we were tracking sales, and it was something like 200,000 drinks the first week – when we were hoping for 100,000,” Dan Moore, director of brand management at Starbucks, said in a statement. “The next week it was 400,000 and the next it was 800,000. We had figured it would do well in Southern California – but it sold just as well in Chicago, Vancouver B.C. and Boston. It was huge.”

The drink changed the company’s customer base, giving them a way to bring in people who weren’t typically coffee drinkers.

In 1999, Starbucks released the Caramel Frappuccino, complete with the now-typical “dome lid” for whipped cream.

“At the time, domed lids were radical thinking, so was the idea of adding whipped cream,” said Dina Campion of Starbucks’ Digital Team. “But for our customers it represented a momentary break – an escape in their day.”

In 2002, came the Blended Crème beverage, followed by the Frappuccino Light. By 2010, customers could customize their frappuccinos to be made with milk or soy, various coffee types and their preferred syrups and toppings.

The blended beverages are now available in 66 countries with more than 36,000 different drink combinations.